"And this ladder is for a man to creep up and get in through the bottom?" "Right again, sir; you don't want no telling. He creeps up the ladder, in through the bottom, shuts the door down, and there he is, able to look out eight or nine miles any way." Steve looked down, and could see that the men on deck were making the great cask fast to the end of the line. Then, turning to the man again: "You said something about looking out for ice." "Ay, sir, I did." "How long will it be before we come in sight of any?" The sailors both looked at him and smiled. "'Bout as long as it takes to cast your eyes to the nor'ard, sir." "What do you mean?" "Look yonder," said the first Norseman, jerking his thumb over his shoulder. "You can see ice, can't you?" Steve looked in the direction indicated, and shook his head. "Nonsense, sir!" said the other. "There's ice--one, two, three good-sized bits floating this way." "I can't see them," said Steve sadly. "Your eyes are better than mine." "Maybe, sir. We've been at sea longer than you. Try again." The boy looked, holding on by passing his arm round one of the shrouds, while the mast gave from the pressure of the wind, and produced a peculiar effect, as of swinging, now that his attention was not directed to the work going on. "Feel all right?" said the first Norseman. "Yes." "Not giddy, sir?" "No, I think not. I'm all right, but I can't see any ice." "Try again. There, straight away where the sea shines in the sunlight." "N-no," said Steve; "I can see the waves breaking and sparkling miles away." "No, sir; you couldn't see the waves breaking and sparkling miles away on a day like this. What you see is ice." "What, an iceberg? I thought that would be like an island." "No, sir; a bit or two of floe ice going to the south'ard." "Yes, I see now; but how big are these pieces?" "Ten or a dozen feet out of the water, and perhaps a hundred feet long." "But what do you mean by floe ice?" "The ice of the sea frozen." "Well, of course!" cried Steve; "so are icebergs." "Are they, sir?" said the man, smiling. "Have you ever seen one?" "No; but I've often read of them." "Wait till you see one, then, sir, and you won't say they're part of the frozen sea; they're bits of the great ice rivers that run down into the sea, and then break off. Icebergs are fresh water when they're melted-- land ice. Me and my mate have heard them split off with a noise like thunder, and then they float away." "Ahoy, there aloft! Up she comes." The little wheel in the block overhead began to chirrup and squeak as the men hauled upon the line, and the tub with its iron ring and rail began to ascend rapidly higher and higher, till it reached where the three clung, and was then guided to where it was to be secured, with its bottom resting on the place where the tops of the shrouds passed round the mast.